2012221123 has 8 divisors (see below), whose sum is σ = 2205556416. Its totient is φ = 1820620200.

The previous prime is 2012221121. The next prime is 2012221151. The reversal of 2012221123 is 3211222102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2012221123 - 2¹ = 2012221121 is a prime.

It is a super-2 number, since 2×2012221123² = 8098067695694762258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012221097 and 2012221106.

It is not an unprimeable number, because it can be changed into a prime (2012221121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431161 + ... + 435802.

It is an arithmetic number, because the mean of its divisors is an integer number (275694552).

Almost surely, 2^2012221123 is an apocalyptic number.

2012221123 is a deficient number, since it is larger than the sum of its proper divisors (193335293).

2012221123 is a wasteful number, since it uses less digits than its factorization.

2012221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867185.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2012221123 is about 44857.7877631075. The cubic root of 2012221123 is about 1262.4821154608.

Adding to 2012221123 its reverse (3211222102), we get a palindrome (5223443225).

The spelling of 2012221123 in words is "two billion, twelve million, two hundred twenty-one thousand, one hundred twenty-three".